CN211445900U - Laser cladding head for inner wall of cylinder - Google Patents
Laser cladding head for inner wall of cylinder Download PDFInfo
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- CN211445900U CN211445900U CN201922469739.8U CN201922469739U CN211445900U CN 211445900 U CN211445900 U CN 211445900U CN 201922469739 U CN201922469739 U CN 201922469739U CN 211445900 U CN211445900 U CN 211445900U
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Abstract
The utility model provides a drum inner wall laser cladding head, including the collimating lens module, transmission module, focusing lens module, window protective glass module, switching module and the speculum module that are used for receiving the optic fibre laser optical cable that the laser beam jetted into and set gradually along laser beam transmission direction. The lower part of the reflector module is also provided with a transverse air curtain module, and one side of the transverse air curtain module is provided with an air duct; and a paraxial powder feeding module is also arranged on one side of the transverse air curtain module, powder is formed into a powder beam by the paraxial powder feeding module, the powder beam and the laser beam reflected by the reflector module are converged at one point of the inner wall of the cylindrical part together, and the surface of the inner wall of the part is subjected to laser cladding processing. The utility model discloses can realize the inner wall laser cladding of minor diameter, long section of thick bamboo class structure, the inner wall surface cladding technology that is suitable for the pipeline class part of oil, metallurgical industry processes the reinforcement.
Description
Technical Field
The utility model belongs to the technical field of the vibration material disk equipment technique and specifically relates to a laser cladding head, particularly relates to a drum inner wall laser cladding head.
Background
Laser cladding is a novel surface strengthening technology, and forms a cladding layer which is metallurgically bonded with a base material surface by adding cladding powder on the base material surface and fusing the cladding powder and the base material surface together by using a laser beam with high energy density.
Compared with surfacing, spraying, electroplating and vapor deposition, the laser cladding forming process has the characteristics of small heat input, small dilution rate, compact structure, good combination of a coating and a matrix, more suitable cladding materials, large particle size and content change and the like, and is widely applied to the industrial fields of petroleum, metallurgy, electric power and the like. At present, laser cladding is mainly applied to surface repair of shaft rotating parts, metallurgical rolls, blades and the like, for example, cladding formed corrosion-resistant, impact-resistant, wear-resistant coatings and the like, and a current commercial laser cladding machining head is also designed based on the application. Under the action of strong corrosive fluid, the service life of the pipeline type structural member is greatly shortened, the inner surface of the pipeline type structural member needs to be coated, and the existing commercial laser cladding processing head cannot realize laser cladding of the small-diameter round through inner wall.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a drum inner wall laser cladding head can realize the inner wall laser cladding of minor diameter, long section of thick bamboo class structure, and the inner wall processing of the pipeline class part that is particularly suitable for oil, metallurgical industry is reinforceed.
In order to achieve the above object, the utility model provides a drum inner wall laser cladding head, including the fiber laser optical cable that is used for receiving the laser beam and jets into to and collimating lens module, transmission module, focusing lens module, window protective glass module, switching module and the speculum module that sets gradually along laser beam transmission direction, wherein:
the outer part of the collimating lens module is fixed on a connecting flange, the laser cladding head is arranged on the robot through the connecting flange, and the angle of the laser cladding head is changed through the rotation of the robot;
the incident laser beam sequentially passes through the collimating lens module, the transmission module, the focusing lens module, the window protective mirror module, the switching module and the reflector module, and the reflector module changes a light path to reversely reflect the laser beam to the inner wall of the cylindrical part by 90 degrees;
the lower part of the reflector module is also provided with a transverse air curtain module, one side of the transverse air curtain module is provided with an air duct, the air duct is transversely and fixedly connected with the transmission module and sprays high-pressure compressed air through a narrow gap outlet of the transmission module to form a high-speed and high-pressure transverse air curtain, and the compressed air sprayed by the transverse air curtain is guided out through the air duct;
and a paraxial powder feeding module is also arranged on one side of the transverse air curtain module, powder is formed into a powder beam by the paraxial powder feeding module, the powder beam and the laser beam reflected by the reflector module are converged at one point of the inner wall of the cylindrical part together, and the surface of the inner wall of the part is subjected to laser cladding processing.
Further, a laser beam with a certain divergence angle emitted by a laser is converted into parallel light through a collimating lens module, the parallel light is transmitted to a focusing lens module through a transmission module, and the length L of the transmission module determines the deepest distance of the pipeline part which can be clad by the cladding head; the focusing lens module converges the parallel light beams again, the parallel light beams reach the switching module through the window protective mirror module, the length D of the switching module determines the position of a focus after deflection of a light path, so that the minimum inner wall diameter of a cladding head for cladding is determined, and finally the light path is changed through the reflector module and is reflected to the surface of the inner wall of a part for cladding.
Further, the reflector module adopts a copper reflector plate.
Further, the collimating lens module includes a meniscus lens and a biconvex lens, and a laser beam emitted by the laser sequentially passes through the meniscus lens and the biconvex lens to be parallel light.
Further, the focusing lens module includes a plano-convex lens.
Furthermore, one end of the optical fiber laser cable is plugged into the laser, the other end of the optical fiber laser cable is connected to an optical fiber water cooling module through threads, and the optical fiber water cooling module is arranged between the optical fiber laser cable and the collimating lens module.
Further, the collimating lens module is connected with the optical fiber water cooling module, the transmission module is connected with the collimating lens module, the focusing lens module is connected with the transmission module, and the window protective lens module is connected with the focusing lens module through straight structures.
Furthermore, water-cooling cavities are arranged in the collimating lens module, the focusing lens module and the reflector module.
By adopting the technical scheme, the connecting flange is connected to the flange plate of the robot, the angle of the laser head for emitting laser is changed through the rotation of the robot, the laser with a certain divergence angle emitted by the laser head forms parallel light through the collimating lens module, the parallel light is refocused through the focusing lens module, then the light path is changed through the reflector module to form a vertical light path, and the whole body adopts a modular design.
The lower part of the reflector module is provided with a transverse air curtain module connected with high-pressure compressed air, the transverse air curtain module is connected with the high-pressure compressed air and is sprayed out through a narrow gap outlet to form a high-speed and high-pressure transverse air curtain, and a large amount of smoke and splash generated in the laser cladding process are blown away. Because drum pipeline structure inner space is narrow and small, if compressed air freely spouts the technological stability of the influence laser cladding process that can be serious, the utility model discloses an air duct exports horizontal gas curtain module spun compressed air, both can protect the safety of protection lens like this, can guarantee again to melt the stability of cladding technology.
In order to realize the cladding process of the inner wall, a paraxial powder feeding module is configured, powder is sent out by a carrier gas type powder feeder, a powder beam is formed by the paraxial powder feeding module through a powder feeding nozzle, and the powder beam and a laser beam are converged at one point together to realize the laser cladding process.
Further, the collimating lens module with the optic fibre water-cooling module passes through the screw connection, the transmission module with the collimating lens module passes through the screw connection, the focusing lens module with the transmission module passes through the screw connection, the window protection mirror module with the focusing lens module passes through the screw connection, the switching module with the focusing lens module passes through the screw connection, the reflection module with the switching module passes through the screw connection.
Preferably, the laser source emitted by the laser head is a CO2 laser, a fiber laser, a YAG laser, or a semiconductor laser.
Preferably, the focusing lens module is a plano-convex lens.
To sum up, the utility model discloses a drum inner wall laser cladding head's beneficial effect lies in:
1. the inner wall laser cladding of a small-diameter long-cylinder structural member can be realized, and the service life of pipeline parts is prolonged;
2. the manufacturing process of the pipeline parts can be changed, the base body is made of cheap materials, and then a layer of corrosion-resistant alloy is cladded on the surface of the inner wall of the base body, so that the manufacturing cost is greatly reduced.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the inventive subject matter of this disclosure.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a front view of the laser cladding head for the inner wall of the cylinder of the present invention;
FIG. 2 is a left side view of the cylindrical inner wall laser cladding head of FIG. 1;
fig. 3 is a light path diagram of the laser cladding head for the inner wall of the cylinder of the present invention.
Detailed Description
For a better understanding of the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any implementation. Additionally, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.
With reference to fig. 1-3, a laser cladding head for inner wall of cylinder according to the example of the present invention includes a fiber laser cable 2 for receiving laser beam, and a collimating lens module 4, a transmission module 5, a focusing lens module 6, a window protection lens module 7, a switching module 8, and a reflector module 9 sequentially arranged along the transmission direction of laser beam.
The outside of the collimating lens module 4 is fixed on a connecting flange 1, the laser cladding head is installed on the robot through the connecting flange 1, and the angle of the laser cladding head is changed through the rotation of the robot.
Referring to fig. 1 and 3, the incident laser beam sequentially passes through the collimating lens module 4, the transmission module 5, the focusing lens module 6, the window protection mirror module 7, the switching module 8 and the reflector module 9, and the reflector module 9 changes the light path to reflect the laser beam to the inner wall of the cylindrical part by 90 degrees in a reverse direction.
Combine fig. 1, the lower part of speculum module 9 still is provided with a horizontal air curtain module 11, and one side of horizontal air curtain module 11 is provided with the guide duct 10, and the guide duct 10 is exported blowout high-pressure compressed air through its narrow gap with the horizontal fixed connection of transmission module, forms one high-speed, highly compressed horizontal air curtain, because drum pipeline structure inner space is narrow and small, if the technological stability of the influence laser cladding process that compressed air free blowout can be serious, the utility model discloses a guide duct exports horizontal air curtain spun compressed air, blows away a large amount of smog, splash that produce at the laser cladding in-process. Therefore, the safety of the protective lens can be protected, and the stability of the cladding process can be ensured.
A paraxial powder feeding module 12 is also arranged on one side of the transverse air curtain module 11, powder is formed into a powder beam through the paraxial powder feeding module 12, the powder beam and the laser beam reflected by the reflector module are converged at one point of the inner wall of the cylindrical part together, and the surface of the inner wall of the part is subjected to laser cladding processing.
With reference to fig. 3, a laser beam emitted by a laser with a certain divergence angle passes through a collimating lens module to become parallel light, the parallel light is transmitted to a focusing lens module through a transmission module, and the length L of the transmission module determines the deepest distance (which can be determined according to actual conditions) of a pipeline part which can be clad by a cladding head; the focusing lens module converges the parallel light beams again, the parallel light beams reach the switching module through the window protective mirror module, the length D of the switching module determines the position of a focus after deflection of a light path, so that the minimum inner wall diameter of a cladding head for cladding is determined, finally the light path is changed through the reflector module to form a vertical light path, and the vertical light path is reflected to the inner wall surface of a part for cladding processing. The whole adopts a modular design.
Preferably, the mirror module 9 employs a copper mirror plate.
As shown in fig. 3, the collimating lens module 4 includes a meniscus lens and a biconvex lens, and the laser beam emitted by the laser passes through the meniscus lens and the biconvex lens in sequence to make the laser beam parallel.
The focusing lens module 6 adopts a plano-convex lens to converge the transmitted laser beams again.
The transverse air curtain module 11 is connected with a high-pressure compressed air generation module (a storage device and a controllable release device).
As shown in fig. 1 and 2, in order to realize the cladding process of the inner wall of the cylinder, a paraxial powder feeding module 12 is configured, powder is sent out by a carrier gas type powder feeder, a powder beam 14 is formed by the paraxial powder feeding module 12 through a powder feeding nozzle 13, and the powder beam 14 and a laser beam 15 are converged at one point together to realize the laser cladding process.
As shown in fig. 1, one end of a fiber laser cable 2 is plugged into the laser, and the other end is connected to a fiber water cooling module 3 through threads, and the fiber water cooling module is arranged between the fiber laser cable and the collimating lens module.
For convenient connection, the laser cladding head adopts the modularized design, and this collimating lens module 4 with optic fibre water-cooling module 3 passes through the screw connection, transmission module 5 with collimating lens module 4 passes through the screw connection, focusing lens module 6 with transmission module 5 passes through the screw connection, window protective glass module 7 with focusing lens module passes through the screw connection, switching module 8 with focusing lens module passes through the screw connection, reflection module with switching module 8 passes through the screw connection.
Optionally, the collimating lens module 4 and the optical fiber water-cooling module 3, the transmission module 5 and the collimating lens module 4, the focusing lens module 6 and the transmission module 5, and the window protection lens module 7 and the focusing lens module 6 are all connected by straight-opening structures, so that coaxial connection is realized and ensured.
Preferably, water-cooling cavities are arranged in the collimating lens module, the focusing lens module and the reflector module. The built-in water-cooling cavity of collimating lens module 4 can guarantee under the condition of high-power output, keep lens constancy of temperature, thereby guarantee that lens camber does not change, focusing lens module 6 assembles the parallel light beam again, its built-in water-cooling cavity, can guarantee the light path stability of high-power long-time light-emitting, speculum module 9 is used for changing the light path, the built-in water-cooling cavity of speculum piece, can take away the laser heat that melts and covers the absorption of in-process lens, guarantee the long-term use of copper lens piece, in the speculum piece lower part, built-in protection lens, make the copper speculum piece avoid the pollution of welding smog.
According to the technical scheme, the connecting flange is connected to the flange plate of the robot, the angle of the laser head for emitting laser is changed through rotation of the robot, the laser with a certain divergence angle emitted by the laser head forms parallel light through the collimating lens module, the parallel light is refocused through the focusing lens module, then the light path is changed through the reflector module, a vertical light path is formed, and the whole robot adopts a modular design.
Preferably, the laser light source emitted from the laser head is a CO2 laser, a fiber laser, a YAG laser, or a semiconductor laser.
It is further explained that the utility model discloses a cladding head carries out the processing head assembly according to the pipeline class part size of waiting to clad when carrying out drum inner wall cladding processing, for example: the diameter of the inner wall of the pipeline is 150mm, the length of the inner wall of the pipeline is 600mm, the focal length of the focusing lens module is 300mm, the length of the transmission module 5 is determined to be 400mm, the length of the switching module 8 is determined to be 80mm, and the laser cladding head is assembled according to the parameters. Then, the width of the cladding layer was determined to be 4mm and the height to be 1.5mm, the diameter of the optical fiber was selected to be 1000 μm, the defocus amount was determined to be +10mm, and the diameter of the powder feed nozzle 13 was determined to be 2 mm. Firstly, carrying out process test on a flat plate, opening a powder feeder and sending out powder, adjusting the position of a powder feeding nozzle 13, feeding a powder beam to a point indicating a red light spot, carrying out a single-pass flat plate cladding experiment after the adjustment is finished, observing whether the width and the height of a cladding layer are proper or not, and finely adjusting the powder feeding amount and the defocusing amount until the requirements are met. And then the inner wall cladding head is sent into an inner wall structural member to be processed through an actuating mechanism, the inner wall structural member starts to rotate under the action of a rotating shaft, and the inner wall cladding head linearly moves along the direction parallel to the axis of the inner wall structural member until the processing process is finished.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The present invention is intended to cover by those skilled in the art various modifications and adaptations of the invention without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the claims.
Claims (7)
1. The utility model provides a drum inner wall laser cladding head which characterized in that, is including being used for receiving the optic fibre laser optical cable that the laser beam jetted into to and collimating lens module, transmission module, focusing lens module, window protective glass module, switching module and the speculum module that sets gradually along laser beam transmission direction, wherein:
the outer part of the collimating lens module is fixed on a connecting flange, the laser cladding head is arranged on the robot through the connecting flange, and the angle of the laser cladding head is changed through the rotation of the robot;
the incident laser beam sequentially passes through the collimating lens module, the transmission module, the focusing lens module, the window protective mirror module, the switching module and the reflector module, and the reflector module changes a light path to reversely reflect the laser beam to the inner wall of the cylindrical part by 90 degrees;
the lower part of the reflector module is also provided with a transverse air curtain module, one side of the transverse air curtain module is provided with an air duct, the air duct is transversely and fixedly connected with the transmission module and sprays high-pressure compressed air through a narrow gap outlet of the transmission module to form a high-speed and high-pressure transverse air curtain, and the compressed air sprayed by the transverse air curtain is guided out through the air duct;
and a paraxial powder feeding module is also arranged on one side of the transverse air curtain module, powder is formed into a powder beam by the paraxial powder feeding module, the powder beam and the laser beam reflected by the reflector module are converged at one point of the inner wall of the cylindrical part together, and the surface of the inner wall of the part is subjected to laser cladding processing.
2. The laser cladding head for inner wall of cylinder of claim 1, wherein said reflector module is a copper reflector plate.
3. The laser cladding head for the inner wall of cylinder of claim 1, wherein said collimating lens module comprises a meniscus lens and a biconvex lens, and the laser beam emitted from the laser passes through the meniscus lens and the biconvex lens in sequence to make the laser beam parallel.
4. The cylindrical inner wall laser cladding head according to claim 1, wherein said focusing lens module comprises a plano-convex lens.
5. The laser cladding head for the inner wall of cylinder of claim 1, wherein one end of said fiber laser cable is plugged to the laser and the other end is connected to a fiber water cooling module through screw thread, the fiber water cooling module is arranged between the fiber laser cable and the collimating lens module.
6. The laser cladding head for the inner wall of cylinder of claim 5, wherein said collimating lens module and said fiber water cooling module, said transmission module and said collimating lens module, said focusing lens module and said transmission module, and said window protecting lens module and said focusing lens module are all connected by straight port structure.
7. The laser cladding head for the inner wall of cylinder of claim 1, wherein water-cooled cavities are provided in said collimating lens module, focusing lens module and reflector module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201922469739.8U CN211445900U (en) | 2019-12-31 | 2019-12-31 | Laser cladding head for inner wall of cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922469739.8U CN211445900U (en) | 2019-12-31 | 2019-12-31 | Laser cladding head for inner wall of cylinder |
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| CN211445900U true CN211445900U (en) | 2020-09-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112941505A (en) * | 2021-01-22 | 2021-06-11 | 山东能源重装集团大族再制造有限公司 | Fiber laser machining head and cladding plate process |
| CN113481504A (en) * | 2021-07-02 | 2021-10-08 | 西安交通大学 | Rotatable hole laser cladding device |
| CN114769626A (en) * | 2022-04-27 | 2022-07-22 | 南京中科煜宸激光技术有限公司 | Broadband laser cladding head for laser additive manufacturing system |
| CN117399651A (en) * | 2023-09-22 | 2024-01-16 | 上海盖泽激光科技有限公司 | Laser cladding head optical system for inner wall |
-
2019
- 2019-12-31 CN CN201922469739.8U patent/CN211445900U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112941505A (en) * | 2021-01-22 | 2021-06-11 | 山东能源重装集团大族再制造有限公司 | Fiber laser machining head and cladding plate process |
| CN113481504A (en) * | 2021-07-02 | 2021-10-08 | 西安交通大学 | Rotatable hole laser cladding device |
| CN114769626A (en) * | 2022-04-27 | 2022-07-22 | 南京中科煜宸激光技术有限公司 | Broadband laser cladding head for laser additive manufacturing system |
| CN117399651A (en) * | 2023-09-22 | 2024-01-16 | 上海盖泽激光科技有限公司 | Laser cladding head optical system for inner wall |
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